CN201156317Y - Educational affiliation for demonstration of thermal expansion and cooling shrinkage of gas - Google Patents
Educational affiliation for demonstration of thermal expansion and cooling shrinkage of gas Download PDFInfo
- Publication number
- CN201156317Y CN201156317Y CNU2008200102787U CN200820010278U CN201156317Y CN 201156317 Y CN201156317 Y CN 201156317Y CN U2008200102787 U CNU2008200102787 U CN U2008200102787U CN 200820010278 U CN200820010278 U CN 200820010278U CN 201156317 Y CN201156317 Y CN 201156317Y
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- CN
- China
- Prior art keywords
- flask
- hole
- seal plug
- plug
- water tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Devices For Use In Laboratory Experiments (AREA)
Abstract
The utility model relates to an educational affiliation demonstrating gas expansion from heat and contraction from cold. The educational affiliation is characterized by comprising two parallel open flasks; the opening of one flask arranged in a water tank is provided with a seal plug with a through hole; the opening of the other flask is provided with the seal plug with two through holes; a glass tube is put through the through hole of the seal plug of the flask arranged in the water tank; the other end of the glass tube is put through one through hole of the seal plug of the other flask; a conduit is put through the other through hole of the seal plug of the flask; the water tank and two flasks are all filled with water; the flask wall of the flask arranged in the water tank is also provided with a temperature sensor. The educational affiliation has simple structure and strong operability and can demonstration the gas expansion from heat and contraction from cold intuitively, thereby not only saving trouble but also saving time; the educational affiliation is convenient for the teacher to fulfill the teaching task promptly and also improves the learning interest and the practicing ability of the student and helps to cultivating the student ability for analyzing and solving problem.
Description
Technical field
The utility model relates to a kind of teaching aid, particularly relates to a kind of teaching aid that gas expands with heat and contract with cold of demonstrating, and is to having replenishing of physics teaching in secondary school apparatus kind now, belonging to the school supply and stationery category.
Background technology
At present, middle school teaching apparatus kind is a lot, but function singlenesses all just designs at the content that needs separately to show.In junior middle school physics teaching, make the student grasp the knowledge that gas expands with heat and contract with cold by experiment, it is very important content in the physics teaching, yet be again one of the important of physics lesson and the course of beyonding one's depth, student and teacher press for teaching aid targetedly, the teaching aid because existing demonstration gas expands with heat and contract with cold, do experiment and come DeGrain, and be difficult for observing, there is certain difficulty in the expand with heat and contract with cold understanding of knowledge to the student to gas, thereby bring certain difficulty to teaching, even have influence on student performance and learning interest.
The utility model content
The purpose of this utility model is to overcome the prior art above shortcomings, improves by research, provides a kind of teaching aid that gas expands with heat and contract with cold of demonstrating.This novel teaching aid is simple in structure, workable, but ocular demonstration gas expands with heat and contract with cold, not only save trouble but also save time, both be convenient to the teacher and finished teaching task quickly, improved the interest and the manipulative ability of student's study again, very helpful to the analysis and the problem-solving ability of cultivating the student.
The technical scheme that the utility model provides is: the teaching aid that this demonstration gas expands with heat and contract with cold, be characterized in two uncovered flasks arranged side by side, one of them flask open-mouth that is placed in the tank is provided with the sealing-plug of being with through hole, the open-mouth of another flask is provided with the sealing-plug with two through holes, be placed in the through hole of flask sealing-plug in the tank and be installed with glass tube, the other end of glass tube penetrates in the through hole of another flask sealing-plug, be installed with conduit in another through hole of this flask sealing-plug, all be loaded with water in tank and two flasks, also be provided with temperature sensor on the described bottle wall that is placed on flask in the tank.
Compared with prior art, the beneficial effects of the utility model are: simple in structure, workable, but ocular demonstration gas expands with heat and contract with cold, not only save trouble but also save time, both be convenient to the teacher and finished teaching task quickly, improved the interest and the manipulative ability of student's study again, very helpful to the analysis and the problem-solving ability of cultivating the student.
Description of drawings
Accompanying drawing is the structural representation that the utility model provides embodiment.
Embodiment
As shown in the figure, the teaching aid that this demonstration gas expands with heat and contract with cold, two uncovered flasks arranged side by side are arranged, one of them flask 5 open-mouth that are placed in the tank is provided with the sealing-plug 6 of being with through hole, the open-mouth of another flask 7 is provided with the sealing-plug 8 with two through holes, be placed in the through hole of flask 5 sealing-plugs 6 in the tank 1 and be installed with glass tube 2, the other end of glass tube 2 penetrates in the through hole of another flask 7 sealing-plugs 8, be installed with conduit 3 in another through hole of these flask 7 sealing-plugs 8, tank 1 and two flasks 5, all be loaded with water 4 in 7, also be provided with temperature sensor 9 on the described bottle wall that is placed on flask 5 in the tank 1.
During demonstration, add the water in the hot water storgae 1 earlier, can be observed that gas is swollen in the flask 5 rises, outwards spray along the glass tube 2 that connects flask 5, flask 7, formation fountain phenomenon, water temperature is high more, and the fountain phenomenon is obvious more; Flask 5 is taken out from tank 1, gas is met cold contraction in the flask 5, and gas is got back in the flask 5 along the glass tube 2 that connects flask 5, flask 7, and the fountain phenomenon disappears, water is back in the flask 7 along glass tube 2, and the glass tube 2 that can be observed in the flask 7 interior liquid begins to have bubble to emerge.
Claims (1)
1. demonstrate the teaching aid that gas expands with heat and contract with cold for one kind, it is characterized in that having two uncovered flasks arranged side by side, one of them flask open-mouth that is placed in the tank is provided with the sealing-plug of being with through hole, the open-mouth of another flask is provided with the sealing-plug with two through holes, be placed in the through hole of flask sealing-plug in the tank and be installed with glass tube, the other end of glass tube penetrates in the through hole of another flask sealing-plug, be installed with conduit in another through hole of this flask sealing-plug, all be loaded with water in tank and two flasks, also be provided with temperature sensor on the described bottle wall that is placed on flask in the tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200102787U CN201156317Y (en) | 2008-01-16 | 2008-01-16 | Educational affiliation for demonstration of thermal expansion and cooling shrinkage of gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200102787U CN201156317Y (en) | 2008-01-16 | 2008-01-16 | Educational affiliation for demonstration of thermal expansion and cooling shrinkage of gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201156317Y true CN201156317Y (en) | 2008-11-26 |
Family
ID=40104095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200102787U Expired - Fee Related CN201156317Y (en) | 2008-01-16 | 2008-01-16 | Educational affiliation for demonstration of thermal expansion and cooling shrinkage of gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201156317Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459106A (en) * | 2019-08-14 | 2019-11-15 | 济宁医学院 | A kind of physical chemistry synthetic instruction interest demonstration equipment |
-
2008
- 2008-01-16 CN CNU2008200102787U patent/CN201156317Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459106A (en) * | 2019-08-14 | 2019-11-15 | 济宁医学院 | A kind of physical chemistry synthetic instruction interest demonstration equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081126 |